Day 9 of 100-Day Oracle DBA Challenge | Understanding Undo & Undo Management in Oracle Database
Автор: DBA with Hillary
Загружено: 2026-01-22
Просмотров: 17
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Welcome to Day 9 of my 100-Day Oracle DBA Challenge. Today, we dive into one of the most critical components of Oracle Database — Undo and Undo Management.
Learn how Undo helps maintain database consistency, supports transaction rollback, enables Flashback features, and ensures smooth instance recovery. We cover:
What Undo is and why it’s essential
Undo tablespaces like UNDOTBS1 and UNDOTBS2
Automatic and Manual Undo Management modes
Undo retention and monitoring
Common errors such as ORA-30036 and ORA-01555 and how to fix them
If this video helped you, leave a comment and share which Undo issues you encounter most often. Don’t forget to like, subscribe, and follow along in the 100-Day Oracle DBA Challenge.
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